ISO 9964-3-1993 水质 钠和钾的测定 第3部分:火焰发射光谱法测定钠和钾

标准号：ISO 9964-3-1993
中文标准名称：水质 钠和钾的测定 第3部分:火焰发射光谱法测定钠和钾
英文标准名称：Water quality; determination of sodium and potassium; part 3: determination of sodium and potassium by flame emission spectrometry
标准类型：C51
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：C51
国际标准分类号：13.060.50
适用范围：The principle of the method specified is aspirating the sample into a gas flame of sufficient thermal energy to cause any sodium and potassium present to emit its characteristic radiation and measuring the intensity at a wavelength of 589,0 nm for sodium and 766,5 nm for potassium. Applies to water samples with a mass concentration of sodium and potassium of up to 10 mg/l. For higher concentrations, a smaller test portion is taken for analysis. The lower limits of determination are less than 0,1 mg/l for both sodium and potassium.